It produces 220 horsepower and 260 lb-ft of torque. The 2012 Buick Regal GS has the same turbocharged engine as the turbo models, but it has an additional turbo boost that produces 270 horsepower ...

Oldsmobile 4-4-2 W-30 versus Buick GS 455 Stage 1, A-body brothers each considered the “gentleman’s musclecar.” Sibling ...